1. The problem statement, all variables and given/known data http://s741.photobucket.com/user/pforpashya/media/studybitch/untitled_zps4cac3f38.png.html?filters[user]=137200878&filters[recent]=1&sort=1&o=0 2. Relevant equations 3. The attempt at a solution Well I already got the solution and also verified answer in simulation. My question is, while solving for t>0 current through capacitor I obtained using Thevenins eq. while writing equation for vth i have to consider vc(0)=3v with the open circuited vth while applying mesh analysis. Now if i try to do with nodal analysis and if i apply kcl at middle node do i have to consider the v(0)=3v in series with capacitor if no then please tell me why?